[FFmpeg-user] Mac OSX 10.6.8 and QTkit

[Tim Hiles]

Hi all,

A few questions.

#1: Has anyone ever imported mini-DV's using Sony iLink via ffmpeg? If so,
would you say there is a quality difference between that and importing
through IMovie 8 or IMovie HD for that matter?

#2: If there is a better quality using ffmpeg does anyone know of a static
OSX 10.6.8 build that has QTKit enabled? Or, and pardon my ignorance, but
is there a way I can enable QTkit on a static build?  I read up and you
need 10.7+ to use avfoundation so I have to use QTkit. I also ask this
because I have no clue how to compile a program. I use static ffmpeg builds
on my PC.

Thanks in advance!

Tim
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Re: [FFmpeg-user] Any way to get better use of the cpu?

[Roger Pack]

On 2/23/16, Carl Eugen Hoyos  wrote:
> Roger Pack  gmail.com> writes:
>
>> I'm referring more to the fact that if I output to two
>> outputs, from the same ffmpeg instance, in essence, this:
>>
>> ffmpeg -i input output1 output2
>>
>> takes twice as long as running these two in parallel:
>>
>> ffmpeg -i input output1
>> ffmpeg -i input output2
>
> The tee muxer fixes this issue.

Hmm...it seems the tee muxer is mostly for encoding once, then
outputting to several (the same encoded content) it apperas?  In this
particular instance I'm trying to encode multiple streams
simultaneously "in parallel" so that I can use more cores (assuming
each encoding uses at most 2 cores, which seems to be the case here).
https://gist.github.com/rdp/0a152670b742053a2a69e8d54e613b9a was my
attempt at it.
I suppose it just isn't possible today, and I may file a trac feature
request for it sometime.
Cheers!
-roger-
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Re: [FFmpeg-user] ffmpeg upgrading

[Cley Faye]

2016-06-03 17:05 GMT+02:00 Jase :

> I’ve been trying unsuccessfully trying to upgrade to the current version.
> I have followed any /all instructions I could find but to no avail and  I
> really need it updated so one of my sites will work properly . Please can
> some one help. Version and codecs installed are below.


​If you installed ffmpeg using your distributions' tools (things like
aptitude/dpkg or rpm, etc.) you can use that.
If you installed ffmpeg "by hand", simply replace the binaries; as far as I
know there is no "installation" process. If you're a simple user on a
system, you can also just drop ffmpeg's binaries in your path (~/bin is a
good place for that).

More details on what was unsuccessful on your end might help to provide a
more detailed answer.
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Re: [FFmpeg-user] ffmpeg upgrading

[Carl Eugen Hoyos]

Jase  dankape.com> writes:

> FFMPEG on my server is currently version 0.9 . I’ve been 
> trying unsuccessfully trying to upgrade to the
> current version.

What did you try unsuccessfully?
Did you look at http://ffmpeg.org/download.html where 
you can find a link to a current binary?

Carl Eugen
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[FFmpeg-user] ffmpeg upgrading

[Jase]

Hi 

FFMPEG on my server is currently version 0.9 . I’ve been trying unsuccessfully 
trying to upgrade to the current version. I have followed any /all instructions 
I could find but to no avail and  I really need it updated so one of my sites 
will work properly . Please can some one help. Version and codecs installed are 
below.

ffmpeg version 0.9.1-syslint, Copyright (c) 2000-2012 the FFmpeg developers
  built on May 25 2016 17:53:54 with gcc 4.4.7 20120313 (Red Hat 4.4.7-16)
  configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree 
--enable-gpl --enable-pthreads --enable-libopencore-amrnb 
--enable-decoder=liba52 --enable-libopencore-amrwb --enable-libfaac 
--enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 
--enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ 
--extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-version3 
--extra-version=syslint
  libavutil51. 32. 0 / 51. 32. 0
  libavcodec   53. 42. 4 / 53. 42. 4
  libavformat  53. 24. 2 / 53. 24. 2
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 53. 0 /  2. 53. 0
  libswscale2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] 
outfile}...

Many thanks


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Re: [FFmpeg-user] "--enable-nvresize" what is means?

[郭浩]

thanks ,  but i can't find --enable-nvresize in ffmpeg configure, how can i  
add and use it ？ thanks  








At 2016-06-03 04:12:53, "chronek"  wrote:
>I think nvresize is a part of nvidia gpu acceleration patch and it is a 
>GPU accelerated video resizer
>from:
>http://developer.download.nvidia.com/compute/redist/ffmpeg/1511-patch/FFMPEG-with-NVIDIA-Acceleration-on-Ubuntu_UG_v01.pdf
>
>
>
>W dniu 2016-06-02 o 19:59, Lou pisze:
>> On Thu, 2 Jun 2016 16:03:09 +0800 (CST)
>> 郭浩  wrote:
>>
>>> "--enable-nvresize"   what is means?  thanks
>> I don't know what it means. This option does not exist in FFmpeg.
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